Windows CE can not logon to Windows Server 2008 R2 RD Host

Hi @ all,

i have some Windows CE Devices that are using RDP Client 5.5.

When they log on a RD Host, they get the error message "Because of a Security error, the client could not connect..."

Any other RDP Client are stil working fine. In the past the CE Devices are working fine too.

The are some Articles that are decribing the problem and rcommend to delete all X509 Certificate under HKLM\system\CCS\Control\Terminal Server\RCM on all RD Hosts und reactivate the RD License Host with telephone.

Is that realy solution for above described error message? I can't believe that i have Certificate corruption, because all other Clients are stil working fine.

Thank you for Feedback.

Adrian